Water-gage.



B. ZINDEL.

WATER GAGE.

APPLICATION 'FILED JULY 31, 1912. Lgm n mmm@ Nov. 19, 912.

inattesi.

l0 ity f is screwed 5 the parts and detaching them.

BARNHARDT ZNBEL, GF GREEN BAY, WISCONSIN.

warren-enen.

Specification of Letters Patent. Application ala July si, una

.Patent ed Nov. Ml, .itil serial No., 712,417.

To aZZ Awhom it may concern.'

Be it known that il, EARNHARDT ZINDEL.. a citizen of the United Statesof America, and a resident of certain new and useful Improvements inlVaterGages, of which the following is a full and clear specification,reference being had to the accompanying drawings', in whichi l Q,

Figure l is a view partly in side elevation and partly in verticalsection showing my 'improved gage applied to a steam boiler; FigQ is aside elevation of the main guard casing detachedg'Fig. 3 isa similarview of the guard frame or casing; Fig. 4C is a horizontal section onthe line e of Fig. l, the parts being enlarged; and, Fig. 5 is a similarView on the line 5-5 of Fig. l.

rlhe object o i' this inventionis to so construct a glass water-gagethat should the glass tube burst the steam and hot water and comminutedglass will be carried away by the pressure through a suitable waste pipeor tube, who may be near the glass from injury lby flying glassparticles and hot steam, as more fully hereinafter set forth.

In the drawing, a designates the connection between the top of the gageand the boiler and Z9 designates the usual connection between the lowerend of the gage and the boiler. The connection a is provided with adepending threaded nipple c and the connec- -5 tion Z2 is provided withan upstanding threaded nipple d. The usual glass tube e connects andextends into these nipples,rand surrounding this glass tube is the mainguard traine or casing whose upper extre1non to the nipple c and whoselower extremity g is screwed on to the nipple aZ, the outer surfaces ofthese parts f and g being preferably adapted to receive a wrench forconvenience in connecting up A suitable ,gasket/t is provided within theupper end of the casingand a similar gasket i' is provided at the lowerend of the casing to make steam-tight joints at the 'respective ends of0 the glass tube.

The vertical openings in the guard casing form a series of vertical'barsy' which surround the glass tube and form a guard cage therefor, and atthe lower end of the casing,

5 at a point'just above the lower gasket i, the casing is provided witha series of lat- Green Bay,- ,county-ot 5 Brown, State of lVisconsin,have invented 'guard cage` or frame.

thereby protecting -persons glass tube become broken ber Z which at oneside has cast integral with it a discharge elbow m to whose extreinitvis connected atube n. suitable point of deposit.

The annular'casing Z bears upon an annular shoulder 0 formed on the mainguard casing, andthe top' wall 'of this casing has a bearing against anannular shoulder p formed on the 'guard easing at a point just above theopenings Zi'. Projecting upwardly :trom the outer edge of the easing Zis an annular flange g which, together with the top Awall of the casing,forms an annular bearing Afor 'a gasket or packing r. Haring its lowerend bearing upon this gasket fr is a supplemental glass tube s, andsurrounding this tube s are vertical barsZ of a supplemental The lowerends of these bars are connected tits within the vupstanding flange yand bears down upon the packing r. Screwed on an externally threadedportion of the main guard casing7 at a point above the. termination ofthe bars j is an annular flange u which is provided with a dependingflange to which surrounds the upper ends of the glass tubes s and a ring:i: connecting the upper ends ofthe bars t,-a suitable packing ring ifbeing provided to make a steam and water tight jointat this point.

lt will be observed that while the gage is under pressure, the steam andwater and small pieces of glass will be discharged out through theopenings Z: and be conducted away by the pipe n. and the supplementalglass tube and guard bars will serv-e as temporary protection until theboiler is cut ott from the gage. It will be observed that under suchconditions t-hel supplemental glass tube will not be subjected to thefull pressure of the boiler` since the blow-oft casing and elbow andpipe are larger in area than the passages connecting the gage to theboiler, so that the supplemental glass tube willbe amply suh'icient toprotect "surrounding persons .and objects until the gage can be cut oli"from the boiler. lt will be observed also that my construction greatlyYfacilitates assembling of the` parts as well as dismantling of thestructure. sothat the gage can be readily, put together anddisassembled.

leading to a should the .main

Surrounding and inby a ring 'u which Having thus fully described myinvention, what I claim as new and desire to secure by Letters Patent,is:-

1. In a water-gage, the combination of two boiler Connections, a mainguard casing connesting the extremities of these connections, a mainglass sight-tube inelosed within the casing, said casing being formed ofvertical bars throughout the main portion of its length and providedwith lateral openings at its lower end and also with an annular shoulderat its lower end below said openings, an annular blow-ofi' chambersurrounding the exits of said openings and bearing upon the saidshoulder, an annular flange screwed on the upper end of said Casingabove the upper extremities of the bars, and

- a supplemental sight-tube and guard frame therefor clamped betweensaid annular flange and the upwardly facing top wall of said blow-oft'chamber.

Copies of this patent may be obtained for 2. The combination with boilerconnections, of a -safety sight gage comprising a main guard casingconnecting said boiler connections, a main sight tube inelosed therein,a blow-olf chamber supported on the main casing at the lower endthereof, said main casing being provided with an opening communicatingwith said blow-ofic chamber, a supplemental sight tube surrounding themain casing, and an annular flange adjustably mounted on the main casingand adapted. to clamp said supplementalsight tube against the blow-offeasing, for the purposes set forth.

In testimony whereof I hereunto aiix my signature in the presence of twowitnesses.4

BARNHARDT, ZINDEL.

ve centseach, by addressing the Commissioner of Patents,y Washington, D.C.

